Head and Neck Surgery — MCQs

An 85-year-old ventilator-dependent male was endotracheally intubated 10 days ago. He remains unresponsive and is not a candidate for early extubation. The intensive care unit (ICU) attending elects to perform tracheostomy at the bedside. During the procedure, copious dark blood is encountered. This is most likely due to transection of which of the following?

Q90Medium

A 56-year-old smoker presented with swelling over the parotid region. Histology shows papillary structures composed of granular eosinophilic cells, cystic changes, and mature lymphocytic infiltration, which is pathognomonic of Warthin tumor. What is the treatment of choice for Warthin tumor?

Head and Neck Surgery Indian Medical PG Practice Questions and MCQs

Question 81: What is the most common organism that causes the following condition?

A. Polymicrobial
B. Beta-hemolytic streptococci (Correct Answer)
C. Clostridium perfringens
D. Clostridium tetani

Explanation: ***Beta-hemolytic streptococci*** - **Group A Streptococcus (S. pyogenes)** is the most common causative organism for **peritonsillar abscess**, accounting for the majority of cases. - These organisms have high **virulence** and produce enzymes like **streptokinase** and **hyaluronidase** that facilitate tissue invasion and abscess formation. *Polymicrobial* - While some peritonsillar abscesses can be **polymicrobial**, the majority are caused by a **single predominant organism**. - **Mixed infections** are more common in chronic or recurrent cases, not in typical acute presentations. *Clostridium perfringens* - This is an **anaerobic gram-positive rod** that primarily causes **gas gangrene** and **necrotizing fasciitis**. - It is **not associated** with peritonsillar abscess formation and typically affects deeper soft tissues. *Clostridium tetani* - This organism causes **tetanus** through **tetanospasmin toxin** production, leading to **muscle spasms** and **lockjaw**. - It does **not cause abscesses** but rather a systemic toxin-mediated disease following wound contamination.

Question 82: How many Champy's osteosynthesis lines exist behind and in front of the mental foramen?

A. 2 ahead of and 2 behind the mental foramen
B. 1 ahead of and 2 behind the mental foramen
C. 2 ahead of and 1 behind the mental foramen (Correct Answer)
D. 1 ahead of and 1 behind the mental foramen

Explanation: **Explanation:** Champy’s lines of osteosynthesis are based on the principle of **biomechanical functional loading** of the mandible. According to Champy’s research, the mandible experiences different mechanical stresses (tension and torsion) during function, which dictates where miniplates should be placed for stable internal fixation. 1. **Behind the Mental Foramen (Molar/Angle region):** In this region, the mandible primarily experiences tension along the superior border. Therefore, only **one** line of osteosynthesis is required, placed at the base of the alveolar process (the "line of tension"). 2. **Ahead of the Mental Foramen (Symphysis/Parasymphysis region):** This area is subject to significant torsional (twisting) forces and shearing. To counteract these forces, **two** lines of osteosynthesis are required: one superiorly (near the alveolar border) and one inferiorly (at the lower border of the mandible), spaced about 4–5 mm apart. **Analysis of Incorrect Options:** * **Option A & B:** These overestimate the stability required behind the mental foramen. A second plate is unnecessary in the molar region and may risk damage to the inferior alveolar nerve. * **Option D:** This underestimates the torsional forces in the anterior mandible. A single plate in the symphysis region is insufficient to prevent rotation of the fragments. **Clinical Pearls for NEET-PG:** * **Ideal Placement:** Behind the mental foramen, the plate is placed at the **external oblique ridge**. * **Monocortical Screws:** Champy’s technique utilizes miniplates with monocortical screws to avoid damaging the roots of the teeth and the inferior alveolar nerve. * **Tension vs. Compression:** The superior border of the mandible is the tension side, while the inferior border is the compression side. Champy’s lines focus on neutralizing tension.

Question 83: Which of the following statements about cleft palate is incorrect?

A. Surgery is typically recommended around 1 year of age.
B. Approximately 50% of patients achieve normal speech after surgical repair. (Correct Answer)
C. Hearing loss is a common associated condition.
D. Cleft lip is present in about 45% of cases.

Explanation: **Explanation:** The statement regarding speech outcomes is **incorrect** because the success rate of surgical repair is significantly higher. Approximately **80% to 90%** of children achieve normal or near-normal speech after a well-performed palatoplasty. Only about 10-20% develop Velopharyngeal Insufficiency (VPI), which may require secondary speech surgery or therapy. **Analysis of Options:** * **Option A (Correct Timing):** Surgery is ideally performed between **6 to 12 months** of age. This timing balances the need for adequate palatal growth with the goal of providing a functional palate before the child begins significant speech development. * **Option C (Hearing Loss):** This is a true association. Due to the abnormal insertion of the **Tensor Veli Palatini** muscle, the Eustachian tube fails to open effectively. This leads to chronic middle ear effusion (Glue Ear) and **conductive hearing loss**. * **Option D (Incidence):** Cleft palate occurs in isolation in about 25% of cases, while it is associated with a cleft lip in approximately **45-50%** of cases. **High-Yield Clinical Pearls for NEET-PG:** * **Muscle of Cleft Palate:** The most important muscle to reconstruct is the **Levator Veli Palatini** (responsible for the "levator sling"). * **Rule of 10s:** Used for **Cleft Lip** repair (10 weeks old, 10 lbs weight, 10 g hemoglobin). * **Common Surgical Techniques:** Von Langenbeck (simplest), Veau-Wardill-Kilner (V-Y pushback), and Furlow’s double-opposing Z-plasty. * **Syndromic Association:** Always screen for **Pierre Robin Sequence** (Micrognathia, Glossoptosis, and Cleft Palate).

Question 84: Excessive blood loss during mandibulectomy can be prevented by all of the following except?

A. Use of pressure and packing
B. Use of electrocautery
C. Adrenaline infiltration (Correct Answer)
D. Artery application to the open vessels

Explanation: **Explanation:** The correct answer is **C. Adrenaline infiltration**. In major head and neck surgeries like mandibulectomy, the primary source of bleeding is from large-caliber vessels, specifically the **Inferior Alveolar Artery** (a branch of the maxillary artery) and the **Facial Artery**. **Why Adrenaline Infiltration is the "Except" option:** While adrenaline (epinephrine) causes vasoconstriction of small capillaries and is excellent for controlling "ooze" in skin incisions or mucosal flaps, it is **ineffective** for controlling bleeding from major arteries encountered during a mandibulectomy. Furthermore, excessive adrenaline infiltration in the head and neck region can lead to systemic cardiovascular side effects (tachycardia, hypertension) without providing the definitive hemostasis required for large-vessel ligation. **Analysis of other options:** * **Pressure and Packing (A):** This is a standard initial maneuver to control venous plexus bleeding or diffuse capillary hemorrhage during bone resection. * **Electrocautery (B):** Monopolar and bipolar cautery are essential for coagulating smaller vessels and soft tissue attachments to the mandible. * **Artery application (D):** The definitive management for bleeding during mandibulectomy is the identification and **ligation (clamping/tying)** of major vessels like the inferior alveolar artery before or immediately after the bone cut. **NEET-PG High-Yield Pearls:** * The **Inferior Alveolar Artery** is the most common source of significant intra-osseous bleeding during a mandibulectomy. * Pre-operative **selective embolization** may be considered for highly vascular tumors (e.g., Ameloblastoma or Central Giant Cell Granuloma) to reduce blood loss. * **Hypotensive anesthesia** is another systemic technique used to minimize blood loss in major maxillofacial procedures.

Question 85: All of the following are indications for CT scan in a head-injured patient except?

A. Glasgow Coma Scale (GCS) less than 13
B. Vomiting occurring once (Correct Answer)
C. Focal neurological deficit
D. Mild head injury in a patient older than 65 years

Explanation: In head injury management, the decision to perform a CT scan is guided by clinical decision rules like the **NICE Guidelines** or the **Canadian CT Head Rule**. These guidelines aim to identify patients at high risk for intracranial hemorrhage while avoiding unnecessary radiation. ### Why "Vomiting occurring once" is the correct answer: According to the NICE guidelines, vomiting is an indication for an immediate CT scan only if it is **persistent** (defined as **two or more episodes**). A single episode of vomiting in an otherwise stable patient with a high GCS is not a mandatory indication for imaging, as the risk of a significant intracranial lesion is statistically low. ### Explanation of Incorrect Options: * **GCS less than 13:** Any patient with a GCS <13 on initial assessment, or a GCS <15 two hours after the injury, requires an urgent CT scan to rule out serious brain injury. * **Focal neurological deficit:** The presence of any focal deficit (e.g., limb weakness, pupillary changes, or cranial nerve palsy) suggests a localized brain lesion or mass effect, making a CT scan mandatory. * **Age > 65 years:** Elderly patients are at a higher risk for intracranial bleeding (especially subdural hematomas) due to cerebral atrophy and increased vascular fragility, even after minor trauma. Therefore, age ≥ 65 is an independent indication for a CT scan. ### NEET-PG High-Yield Pearls: * **NICE Guidelines for CT Head (Adults):** Indications include GCS <13 at any time, GCS <15 at 2 hours, suspected open/depressed skull fracture, signs of basal skull fracture (e.g., Battle’s sign, Raccoon eyes), post-traumatic seizure, focal deficit, and **≥2 episodes of vomiting**. * **Dangerous Mechanism:** A CT is also indicated if there is retrograde amnesia >30 mins combined with a dangerous mechanism of injury (e.g., pedestrian struck by motor vehicle, fall from >1 meter/5 stairs). * **Anticoagulation:** Any head injury in a patient on anticoagulants (like Warfarin) warrants a CT scan regardless of the GCS.

Question 86: The propensity of recurrence after surgical intervention is the least in which of the following conditions?

A. Ameloblastoma
B. Odontogenic myxoma
C. Odontoma (Correct Answer)
D. Fibrocarcoma

Explanation: **Explanation:** The propensity for recurrence in odontogenic lesions depends on their biological behavior, growth pattern, and invasiveness. **Why Odontoma is the correct answer:** An **Odontoma** is classified as a **hamartoma** (a benign, disorganized growth of mature dental tissues) rather than a true neoplasm. It is characterized by slow growth and a well-defined capsule. Once surgically excised (enucleation), it has the **lowest recurrence rate** among the options provided because it lacks infiltrative properties and the biological drive for continuous cellular proliferation. **Analysis of Incorrect Options:** * **Ameloblastoma:** This is a locally aggressive, "benign but locally invasive" neoplasm. It has a high propensity for recurrence (up to 50-90% with simple curettage) because it tends to infiltrate the surrounding trabecular bone beyond its apparent clinical margins. * **Odontogenic Myxoma:** This is a locally invasive mesenchymal tumor with a gelatinous consistency and no capsule. Its "soap-bubble" or "honeycomb" appearance reflects its ability to infiltrate bone marrow spaces, leading to a high recurrence rate if not treated with wide surgical resection. * **Fibrosarcoma:** This is a malignant mesenchymal tumor. By definition, malignancies have a high risk of local recurrence and distant metastasis due to rapid cell division and aggressive local destruction. **Clinical Pearls for NEET-PG:** * **Odontoma:** Most common odontogenic "tumor." Two types: *Compound* (resembles small teeth, usually in anterior maxilla) and *Complex* (conglomerate mass, usually in posterior mandible). * **Ameloblastoma:** Most common site is the molar-ramus area of the mandible. Radiographically shows a "soap-bubble" appearance. * **Treatment Strategy:** While Odontomas require simple enucleation, aggressive lesions like Ameloblastoma and Myxoma often require radical resection with 1–1.5 cm margins to prevent recurrence.

Question 87: Which of the following is characteristic of carcinoma of the tongue?

A. Occurs most commonly on the lateral border of the middle third of the tongue.
B. Metastasizes readily to cervical lymph nodes.
C. Is usually radiosensitive.
D. All of the above. (Correct Answer)

Explanation: Carcinoma of the tongue, specifically **Squamous Cell Carcinoma (SCC)**, is the most common intraoral malignancy. The correct answer is **"All of the above"** because it accurately reflects the clinical behavior and management of this disease. ### **Detailed Breakdown:** * **Option A (Site):** The **lateral border of the middle third** of the tongue is the most frequent site (approx. 75%). This area is often subjected to chronic irritation from sharp teeth or ill-fitting dentures, alongside exposure to carcinogens like tobacco and alcohol. * **Option B (Metastasis):** Tongue SCC is highly aggressive with a rich lymphatic network. It **metastasizes early and frequently** to cervical lymph nodes (Levels I, II, and III). Due to the midline-crossing lymphatics, bilateral or contralateral spread is common, especially if the lesion approaches the midline. * **Option C (Radiosensitivity):** Squamous cell carcinomas of the oral cavity are generally **radiosensitive**. While surgery is often the preferred primary treatment for early stages (T1-T2), radiotherapy is a vital modality for advanced cases, organ preservation, or as adjuvant therapy. ### **Clinical Pearls for NEET-PG:** * **Risk Factors:** Tobacco (smoking/chewing), alcohol, and HPV (though HPV is more strongly linked to the base of the tongue/oropharynx). * **Staging:** The depth of invasion (DOI) is now a critical component of the TNM staging (AJCC 8th Edition). * **Premalignant Lesions:** Erythroplakia has a much higher transformation rate than leukoplakia. * **Nerve Involvement:** Pain or numbness suggests lingual nerve involvement; restricted mobility (ankyloglossia) suggests deep muscle invasion (T4a).

Question 88: A thyroglossal cyst is most often located:

A. Near the hyoid bone (Correct Answer)
B. At the base of the tongue
C. Submandibular region
D. Opposite the cricoid cartilage

Explanation: **Explanation:** The **thyroglossal cyst** is the most common congenital neck swelling. It develops from a persistent segment of the thyroglossal duct, which marks the descent of the thyroid gland from the foramen caecum (base of tongue) to its final position in the neck. **1. Why Option A is Correct:** During embryonic development, the thyroglossal duct is intimately associated with the development of the **hyoid bone**. The duct may pass anterior, posterior, or even through the hyoid bone. Consequently, about **60–80%** of these cysts are found in the **infrahyoid** position, closely related to the hyoid bone. This anatomical relationship is why the **Sistrunk Procedure** (the gold standard surgery) requires the excision of the central part of the hyoid bone to prevent recurrence. **2. Why the Other Options are Incorrect:** * **Option B (Base of Tongue):** While the duct begins here (foramen caecum), lingual thyroglossal cysts are rare (approx. 2%). * **Option C (Submandibular region):** Thyroglossal cysts are strictly **midline** structures (though they may shift slightly to the left as they enlarge). Lateral swellings in the submandibular region are more likely to be branchial cysts or lymphadenopathy. * **Option D (Cricoid cartilage):** While cysts can occur at the level of the thyroid cartilage, the most frequent site remains the hyoid region. **High-Yield Clinical Pearls for NEET-PG:** * **Classic Sign:** The cyst moves upward on **protrusion of the tongue** (due to its attachment to the hyoid bone/foramen caecum) and on deglutition. * **Sistrunk Operation:** Involves removal of the cyst, the entire tract, and the **central 1/3rd of the hyoid bone**. * **Malignancy:** Though rare (<1%), the most common cancer arising in a thyroglossal cyst is **Papillary Thyroid Carcinoma**. * **Ectopic Thyroid:** Always perform an ultrasound to ensure a normal thyroid gland is present before excision, as the cyst may contain the patient's only functioning thyroid tissue.

Question 89: An 85-year-old ventilator-dependent male was endotracheally intubated 10 days ago. He remains unresponsive and is not a candidate for early extubation. The intensive care unit (ICU) attending elects to perform tracheostomy at the bedside. During the procedure, copious dark blood is encountered. This is most likely due to transection of which of the following?

A. Anterior jugular vein (Correct Answer)
B. External jugular vein
C. Internal jugular vein
D. Middle thyroid vein

Explanation: ### Explanation **1. Why Anterior Jugular Vein is Correct:** During a tracheostomy, the surgical approach is strictly **midline**. The **Anterior Jugular Veins (AJV)** descend on either side of the midline in the superficial fascia of the neck. However, they frequently communicate via a large transverse branch called the **jugular venous arch**, which lies in the suprasternal space (Space of Burns). Because the AJV and its communicating branches are located directly in the path of a midline incision, they are the most commonly encountered and transected vessels during the initial stages of the procedure, leading to the "copious dark blood" described. **2. Why the Other Options are Incorrect:** * **External Jugular Vein (B):** This vein runs superficially and laterally over the sternocleidomastoid muscle. It is far from the midline and would not be encountered during a standard tracheostomy. * **Internal Jugular Vein (C):** This is a deep structure located within the carotid sheath, lateral to the trachea. It is protected by the pretracheal fascia and muscles and is not involved in a midline dissection unless there is a major surgical error. * **Middle Thyroid Vein (D):** While this vein drains the thyroid gland into the IJV, it exits the gland laterally. The vessels more commonly encountered at the midline near the thyroid are the **Inferior Thyroid Veins**, which form a plexus (plexus thyroideus impar) in front of the trachea. **3. Clinical Pearls for NEET-PG:** * **Safe Zone:** Tracheostomy is performed between the **2nd and 4th tracheal rings**. * **Thyroid Isthmus:** Usually lies over the 2nd and 3rd tracheal rings and must be retracted or divided. * **High-Yield Anatomy:** The **Inferior Thyroid Veins** and the **Thyroidea Ima Artery** (present in 10% of people) are other midline structures that can cause significant bleeding if not identified. * **Emergency Procedure:** In a "cannot intubate, cannot ventilate" scenario, a **cricothyroidotomy** is preferred over a tracheostomy as it is faster and has fewer vascular risks.

Question 90: A 56-year-old smoker presented with swelling over the parotid region. Histology shows papillary structures composed of granular eosinophilic cells, cystic changes, and mature lymphocytic infiltration, which is pathognomonic of Warthin tumor. What is the treatment of choice for Warthin tumor?

A. Complete excision of the affected portion of the gland with uninvolved margins (Correct Answer)
B. Enucleation
C. Radiotherapy
D. Injection of a sclerosant agent

Explanation: **Explanation:** **Warthin tumor**, also known as **Adenolymphoma** or Papillary Cystadenoma Lymphomatosum, is the second most common benign salivary gland tumor. It typically occurs in the tail of the parotid gland in older male smokers. **1. Why Option A is Correct:** The treatment of choice for Warthin tumor is **complete surgical excision of the tumor with a margin of normal parotid tissue**. This is usually achieved via a **superficial parotidectomy** or a **partial superficial parotidectomy**. The goal is to ensure negative margins to prevent recurrence, although Warthin tumors have a very low recurrence rate (approx. 2%) compared to pleomorphic adenomas. **2. Why Other Options are Incorrect:** * **B. Enucleation:** Simple enucleation (shelling out the tumor) is contraindicated because it carries a high risk of tumor spillage and recurrence. It may also damage the facial nerve if the capsule is breached. * **C. Radiotherapy:** Warthin tumor is a benign, slow-growing lesion. Radiotherapy is reserved for malignant salivary tumors or unresectable cases and is not indicated here. * **D. Sclerosant Agents:** While some studies explore sclerotherapy for cystic lesions, it is not the standard of care for a solid-cystic neoplasm like Warthin tumor. **Clinical Pearls for NEET-PG:** * **Hot Spot on Scan:** Warthin tumor is unique because it shows **increased uptake on Technetium-99m pertechnetate scan** (due to the presence of oncocytes). * **Bilateralism:** It is the most common salivary gland tumor to present **bilaterally** (10%) or multicentrically. * **Histology:** Look for the "double layer" of eosinophilic cells (oncocytes) and a dense lymphoid stroma with germinal centers. * **Smoking Link:** It is the only salivary gland tumor strongly associated with **smoking**.

Practice by Chapter

Salivary Gland Diseases

Practice Questions

Thyroid Gland Disorders

Practice Questions

Parathyroid Gland Disorders

Practice Questions

Neck Masses Evaluation

Practice Questions

Oral Cavity Lesions

Practice Questions

Laryngeal Disorders

Practice Questions

Head and Neck Cancer

Practice Questions

Reconstructive Techniques in Head and Neck Surgery

Practice Questions

Surgical Management of Sleep Apnea

Practice Questions

Airway Management in Head and Neck Surgery

Practice Questions

Surgical Approaches to the Neck

Practice Questions

Neck Dissection Techniques

Practice Questions

Want unlimited practice?

Get full access to all questions, explanations, and performance tracking.

Start For Free